RCD Type B 4Pole 63A 80A 100A 30mA RCCB Residual Current Device Circuit Breaker
What Does an RCD Do?
An RCD is a sensitive safety device that switches off electricity automatically if there is a fault. They are designed to protect against the risks of electrocution and fire caused by earth faults.
How Does it Work?
An RCD constantly monitors the electrical current flowing in the protected circuit, and if it detects a fault current above a certain threshold the RCD will disconnect the circuit very quickly, and thereby reduce the risk of death or serious injury.
Functional principle of RCDs:
Every residual current device (RCD) has three basic components - summation current transformer, trip relay and switching mechanism. The function of the various parts is to detect and to evaluate the residual current and to interrupt the power supply if the residual current exceeds a certain value. For correct function of an RCD, all live conductors of protected circuit, or at least as many conductors as necessary for correct appliance function, must pass through the summation transformer
An RCD works on the principle of comparing currents in live conductors passing through its summation current transformer. In normal conditions (no phase-to-ground fault), the sum total or instantaneous current values equals to zero. Magnetic flow from various working conductors are induced inside the core of the summation current transformer and the sum total of their instantaneous values equals to zero (vectorial sum). Only once earth current flows, a certain part of the current starts to flow outside the live conductors, which creates an imbalance condition. This causes excitation of a corresponding magnetic flow inside the core of the summation current transformer and the output winding generates current that will activate the trip relay and gives impulse to tripping the contacts of the RCD.
Technical Parameters:
| Item |
Type B RCD / Type B RCCB |
| Product Model |
EKL6-100B |
| Type |
B Type |
| Rated Current |
16A , 25A , 32A , 40A , 63A , 80A ,100A |
| Poles |
2Pole ( 1P+N ), 4Pole ( 3P+N ) |
| Rated voltage Ue |
2Pole: 240V ~, 4Pole: 415V~ |
| Insulation Voltage |
500V |
| Rated frequency |
50/60Hz |
| Rated residual operation current(I n) |
30mA , 100mA , 300mA |
| Short-circuit current Inc= I c |
10000A |
| SCPD fuse |
10000 |
| Break time under I n |
≤0.1s |
| Dielectric test voltage at ind.Freq. for 1min |
2.5kV |
| Electrical life |
2,000 Cycles |
| Mechanical life |
4,000 Cycles |
| Protection Degree |
IP20 |
| Ambient temperature |
-5℃ upto +40℃ |
| Storage temperature |
-25℃ upto +70℃ |
| Terminal connection type |
Cable/Pin type busbar
U-type busbar |
| Terminal size top/bottom for cable |
25mm² 18-3AWG |
| Terminal size top/bottom for busbar |
25mm² 18-3AWG |
| Tightening torque |
2.5Nm 22In-Ibs |
| Mounting |
On DIN rail EN60715(35mm)
by means of fast clip device |
| Connection |
From top and bottom |
| Standard |
IEC 61008-1:2010 EN 61008-1:2012
IEC 62423:2009 EN 62423:2012 |